Estimación del estado hídrico de la vegetación a partir de sensores de alta y baja resolución
- Chuvieco Salinero, Emilio
- Salas Rey, Francisco Javier
- Aguado Suárez, María Inmaculada
- Cocero Matesanz, David
- Riaño Arribas, David
ISSN: 1578-5157
Datum der Publikation: 2001
Nummer: 1
Art: Artikel
Andere Publikationen in: Geofocus: Revista Internacional de Ciencia y Tecnología de la Información Geográfica
Zusammenfassung
This paper presents a comparative analysis on the performance of different satellite images (Landsat-TM, NOAA-AVHRR and SPOT-Vegetation) to estimate moisture content of several Mediterranean species. Results from quantitative correlation of field data and satellite images are presented. They show a good correlation trend between moisture content and remote sensing data in the short wave infrared (SWIR) region (1.6 and 2 ìm), both for grasslands and shrublands. For grasslands, traditional vegetation indices, based on red and near infrared data, performed also well, as well as a ratio of vegetation indices and surface temperature. Determination coefficients of 0.8 and 0.7 were obtained from multitemporal comparison with field data.